scholarly journals A New Learning Experience in Gas Turbine Generator a Case Study of Blackout Conditions Due to Tripping of Gtg and the Necessary Corrective Actions to Prevent the Reoccurrence

2020 ◽  
Vol 3 (1) ◽  

This paper describes about the case study of a very interesting and peculiar blackout conditions (total power failure) arising out of both the Gas Turbine Generators (Two units of GTG, namely GTG-01 & GTG-02) units back to back tripping in a short span of a week’s time. It brings out the various observations noted during that condition and it’s root cause analysis. It also highlights the various possible corrective actions in a short term and long term basis to prevent the reoccurrence of such blackout situations.

Author(s):  
John Viercinski ◽  
Matthew Hoffman ◽  
Ivan Pineiro ◽  
Dennis Russom

In 2008, a US Navy DDG-51 Class destroyer experienced an uncontained failure of a Rolls Royce 250-KS4 turbine engine which serves as a starter for the Ship Service Gas Turbine Generator (SSGTG). This paper discusses the events that preceded the failure, the root cause and contributing factors. It also describes multiple corrective actions, including design improvements that have been implemented with the goal of preventing this type of failure in the future.


Author(s):  
Dennis M. Russom ◽  
Russell A. Leinbach ◽  
Helen J. Kozuhowski ◽  
Dana D. Golden

Operational availability of Gas Turbine Generator Sets (GTGs) aboard the U.S. Navy’s DDG 51 Class ships is being enhanced through the combined capabilities of the ship’s Integrated Condition Assessment System (ICAS) and the GTG’s Full Authority Digital Control (FADC). This paper describes the ICAS and FADC systems; their current capabilities and the vision of how those capabilities will evolve in order to improve equipment readiness and reduce life cycle costs.


2019 ◽  
Vol 5 (1) ◽  
pp. 7
Author(s):  
M. Sayuti ◽  
Silvira Maulinda

Increasing effectiveness is very important for companies to obtain success in their business processes. One example of increasing effectiveness is by evaluating the performance of production facilities in the company. PT. X is one of the chemical industry companies whose main production is urea fertilizer. One of the supporting processes of the production process is the Gas Turbine Generator (GTG) in the utility unit. In supporting the production process, GTG often experiences problems that directly hinder the production process. This study aims to analyze the effectiveness of Gas Turbine Generators by using the Overall Equipment Effectiveness (OEE) method. The results of the analysis show that the Turbine Gas Generator effectiveness level is 68.39% which indicates that the value of production effectiveness is considered reasonable, but shows there is a large space for improvement.


Author(s):  
F. K. Konig

The author states the basic philosophy for the installation of gas turbines burning blast-furnace gas in the power-generating systems of an iron and steel works. A description is given of the two gas-turbine generators at the Huttenwerk Rheinhausen, A.G. and their operating experience.


2017 ◽  
Vol 9 (7) ◽  
pp. 1
Author(s):  
Vasiliki A. Basdekidou

The main goal of this paper is to introduce the leveraged ETF die-down price action technical market anomaly (leveraged ETF anomaly), and then to discuss the temporal dimension and the subsequent (time-series) functionalities of this anomaly (temporal leveraged ETF anomaly). Our approach not only challenging the efficient-market hypothesis with regards to constantly declining leveraged ETF price action course, but also has a temporal dimension because it uses the Jesse Livermore’s “psychological time” as parameter in both functions: (i) “emotional control” for opening position at the beginning of an intraday or short-term move and thereafter for holding this position; and (ii) in “money risk management - exit policy” for closing position. Traditional fundamental analysis theories and technical analysis rules and approaches are not able to interpret the die-down (i.e. a constantly declining in a mid- and long-term basis) leveraged ETF price action course. Instead, a rational dynamic and temporal representative agent could explain and document better this anomaly and this is the case of this article (i.e. trading exploitation functionality). The presented research shows that the proposed temporal leveraged ETF anomaly accumulates profit entirely overnight in sideways and in choppy markets, while in a trending market the profit occurs intraday. These findings for the leveraged ETF instruments reject classical theories of trending and sideways markets returns. Hence, (i) in a sideways or in a choppy market, a well designed overnight-position return strategy based on temporal leveraged ETF anomaly; and (ii) in a trending market, a well designed daytime-position return strategy based on temporal leveraged ETF anomaly as well, could gain benefit at the expense of hedgers and long-term investors respectively. After back-testing our research in available 5-year data for the JNUG 3x leveraged ETF (gold miners juniors), we found that overnight-position speculators, in sideways or choppy markets, profit from the proposed temporal leveraged ETF trading strategy approach at the expense of hedgers; and daytime swing traders, in trending markets, profit from the proposed temporal leveraged ETF trading strategy approach at the expense of long-term investors.


2020 ◽  
Vol 118 ◽  
pp. 104861
Author(s):  
Shuchao Gu ◽  
Minghua Zhao ◽  
Guoping Qiu ◽  
Ruixuan Wang ◽  
Yuzhe Liu ◽  
...  

Author(s):  
Dennis M. Russom ◽  
William E. Masincup ◽  
John Eghtessad ◽  
Andrew Schultz

The U. S. Navy uses the Allison 501-K series engines as the prime mover of the Ship Service Gas Turbine Generators (SSGTGs) on DD-963, DDG-993, CG-47 and DDG-51 Class Ships. Historical data shows the engine’s most unreliable component to be the Accessory GearBox (AGB). This paper describes an intensive effort to identify and correct the root cause of the AGB failures and improve overall engine reliability and operational availability.


Author(s):  
James J. Nicolo ◽  
David M. Zipkin ◽  
John Scharschan

This paper details the on-going effort of NAVSEA Philadelphia to provide a command and control technology upgrade to the Model 139 Gas Turbine Generator Set, while deploying a novel approach to this process using Open System Architecture Condition Based Maintenance (OSA-CBM) archetype. The long-term goal of the process being implemented is to serve as the foundation for a communication and interfacing standardization for the marine gas turbine (GT) community. The topics to be discussed in this essay span from investigation to a proposed design, which includes physical measurement of parameters, sensor-Full Authority Digital Controller (FADC) interfacing, and overall system architecture.


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